Monday 12 November 2018

The History of Muscle Dysfunction and SEMG

The history of muscle pain and dysfunction is viewed through the lens of a four factor theory of histologic (tissue related) issues, psychologic (emotional) issues, sensory motor (movement) issues and biomechanical (postural) issues. The historical antecedents of both bodywork and surface electromyography are reviewed.

Key words: Surface EMG, SEMG, bodywork, trigger points, posture, emotions, movement.

Note: Parts of this article have appeared in The History of SEMG, Jour App Psychophys and Biof, In Press.


Humans have had to deal with sore muscles since the beginning of time. Initially, muscle assessments and treatments were conducted by hand and during the last century, the use of electronic instruments came into play.

To put muscle function and the clinical use of Surface electromyography (SEMG) into a perspective of history, is seems prudent to utilize a broad nomothetic net or conceptual framework. In Clinical Applications for Surface Electromyography, Kasman, Cram and Wolf (1998) consider chronic muscle dysfunction from a four fold perspective: Histologic (Tissue related issues); Psychologic (Psychophysiology and Emotions), Sensorimotor (Movement) and Mechanical Dysfunction (Cumulative Trauma, Posture etc). In this article we will provide a brief historical overview related to each of these four areas. This will provide a deep background for the emergence of the clinical use of SEMG, including information on the history of body work, psychophysiology, rehabilitation and the emergence of electricity and SEMG instrumentation.

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